i{
    display: block;
    float: left;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,.7);
}
i + i{
    margin-left: 6px;
}
i.active{
    border: 1px solid #fff;
    background-color:#fff;
}
